如何将 Arraylist 从 activity 传递给广播接收器到另一个广播接收器
How to pass Arraylist from an activity to Broadcast receiver to another broadcast receiver
我想将数组列表从我的 MainActivity 传递给 CheckRunningApplicationReceiver.class（广播接收器）。 CheckRunningApplicationReceiver.class 是从另一个名为 StartupReceiver 的广播接收器调用的，它由警报管理器每 5 秒调用一次。我是否需要先将 arraylist 传递给 StartupReceiver，然后再从那里传递给 CheckRunningApplicationReceiver？或者有什么方法可以直接从 MainActivity 传递给 CheckRunningApplicationReceiver？
StartupReceiver.class
public class StartupReceiver extends BroadcastReceiver {
static final String TAG = "SR";
final int startupID = 1111111;
@Override
public void onReceive(Context context, Intent intent) {
// Create AlarmManager from System Services
final AlarmManager alarmManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
try{
// Create pending intent for CheckRunningApplicationReceiver.class
// it will call after each 5 seconds
Intent i7 = new Intent(context, CheckRunningApplicationReceiver.class);
PendingIntent ServiceManagementIntent = PendingIntent.getBroadcast(context,
startupID, i7, 0);
alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME,
SystemClock.elapsedRealtime(),
1000, ServiceManagementIntent);
} catch (Exception e) {
Log.i(TAG, "Exception : "+e);
}
}
}
CheckRunningApplicationReceiver.class
public class CheckRunningApplicationReceiver 扩展 BroadcastReceiver {
public final String TAG = "CRAR"; // CheckRunningApplicationReceiver
字符串package_name；
ConnectivityManager 数据管理器；
@Override
public void onReceive(Context aContext, Intent anIntent) {
dataManager = (ConnectivityManager)aContext.getSystemService(aContext.CONNECTIVITY_SERVICE);
Method dataMtd = null;
try {
dataMtd = ConnectivityManager.class.getDeclaredMethod("setMobileDataEnabled", boolean.class);
} catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
dataMtd.setAccessible(true);
try {
// Using ACTIVITY_SERVICE with getSystemService(String)
// to retrieve a ActivityManager for interacting with the global system state.
ActivityManager am = (ActivityManager) aContext
.getSystemService(Context.ACTIVITY_SERVICE);
// Return a list of the tasks that are currently running,
// with the most recent being first and older ones after in order.
// Taken 1 inside getRunningTasks method means want to take only
// top activity from stack and forgot the olders.
List<ActivityManager.RunningTaskInfo> alltasks = am
.getRunningTasks(1);
//
for (ActivityManager.RunningTaskInfo aTask : alltasks) {
// When user on call screen show a alert message
if (aTask.topActivity.getClassName().equals("com.android.mms.ui.ConversationList")
|| aTask.topActivity.getClassName().equals("com.android.mms.ui.ComposeMessageActivity"))
{
// When user on Send SMS screen show a alert message
try {
dataMtd.invoke(dataManager, false);
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
} catch (Throwable t) {
Log.i(TAG, "Throwable caught: "
+ t.getMessage(), t);
}
}
MainActivity.class
@Override
protected void onResume()
{
// TODO Auto-generated method stub
getBaseContext().getApplicationContext().sendBroadcast(
new Intent("StartupReceiver_Manual_Start"));//to start StartupReceiver
super.onResume();
}
清单
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.javatechig.listapps.AllAppsActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.javatechig.listapps.Adblock"
android:label="@string/app_name" >
</activity>
<receiver android:name=".StartupReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="StartupReceiver_Manual_Start" />
</intent-filter>
</receiver>
<receiver android:name = ".CheckRunningApplicationReceiver"/>
</application>
使用 putParcelableArrayListExtra() 将列表放入 Intent 并使用 getParcelableArrayListExtra() 从 Intent 获取列表。
是的，您需要将其从 Activity 传递到第一个 BroadcastReceiver，然后它可以将其从传入 Intent 复制到传出 Intent用于触发第二个 BroadcastReceiver.
我所做的是用户选择特定的应用程序，所以我将这些选定的应用程序存储在 arraylist 中并使用共享首选项存储它。使用警报管理器每 1 秒调用一次启动广播接收器，然后调用 check运行apps 广播接收器。在这里，我检索了存储的数组列表并将其与当前的前台应用程序进行比较，然后做任何我想做的事情，比如应用程序锁和其他东西。但问题是它每秒检索 arraylist 并检查它。因此，应用程序有点滞后。我是 android 的新手。我认为我的方法是错误的。我也尝试使用服务，但在服务 onstart 命令中，代码只执行一次，所以它只检查当前 运行 应用程序与 arraylist 一次，即使服务无限期地在后台。请告诉我使用后台服务的正确方法。请把代码发给我。我搜索了很多但没有运气。我希望该服务仅获取一次数组列表并将其与当前前台 运行 应用程序永远进行比较。
我想将数组列表从我的 MainActivity 传递给 CheckRunningApplicationReceiver.class（广播接收器）。 CheckRunningApplicationReceiver.class 是从另一个名为 StartupReceiver 的广播接收器调用的，它由警报管理器每 5 秒调用一次。我是否需要先将 arraylist 传递给 StartupReceiver，然后再从那里传递给 CheckRunningApplicationReceiver？或者有什么方法可以直接从 MainActivity 传递给 CheckRunningApplicationReceiver？
StartupReceiver.class
public class StartupReceiver extends BroadcastReceiver {
static final String TAG = "SR";
final int startupID = 1111111;
@Override
public void onReceive(Context context, Intent intent) {
// Create AlarmManager from System Services
final AlarmManager alarmManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
try{
// Create pending intent for CheckRunningApplicationReceiver.class
// it will call after each 5 seconds
Intent i7 = new Intent(context, CheckRunningApplicationReceiver.class);
PendingIntent ServiceManagementIntent = PendingIntent.getBroadcast(context,
startupID, i7, 0);
alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME,
SystemClock.elapsedRealtime(),
1000, ServiceManagementIntent);
} catch (Exception e) {
Log.i(TAG, "Exception : "+e);
}
}
}
CheckRunningApplicationReceiver.class public class CheckRunningApplicationReceiver 扩展 BroadcastReceiver {
public final String TAG = "CRAR"; // CheckRunningApplicationReceiver
字符串package_name； ConnectivityManager 数据管理器；
@Override
public void onReceive(Context aContext, Intent anIntent) {
dataManager = (ConnectivityManager)aContext.getSystemService(aContext.CONNECTIVITY_SERVICE);
Method dataMtd = null;
try {
dataMtd = ConnectivityManager.class.getDeclaredMethod("setMobileDataEnabled", boolean.class);
} catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
dataMtd.setAccessible(true);
try {
// Using ACTIVITY_SERVICE with getSystemService(String)
// to retrieve a ActivityManager for interacting with the global system state.
ActivityManager am = (ActivityManager) aContext
.getSystemService(Context.ACTIVITY_SERVICE);
// Return a list of the tasks that are currently running,
// with the most recent being first and older ones after in order.
// Taken 1 inside getRunningTasks method means want to take only
// top activity from stack and forgot the olders.
List<ActivityManager.RunningTaskInfo> alltasks = am
.getRunningTasks(1);
//
for (ActivityManager.RunningTaskInfo aTask : alltasks) {
// When user on call screen show a alert message
if (aTask.topActivity.getClassName().equals("com.android.mms.ui.ConversationList")
|| aTask.topActivity.getClassName().equals("com.android.mms.ui.ComposeMessageActivity"))
{
// When user on Send SMS screen show a alert message
try {
dataMtd.invoke(dataManager, false);
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
} catch (Throwable t) {
Log.i(TAG, "Throwable caught: "
+ t.getMessage(), t);
}
}
MainActivity.class
@Override
protected void onResume()
{
// TODO Auto-generated method stub
getBaseContext().getApplicationContext().sendBroadcast(
new Intent("StartupReceiver_Manual_Start"));//to start StartupReceiver
super.onResume();
}
清单
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.javatechig.listapps.AllAppsActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.javatechig.listapps.Adblock"
android:label="@string/app_name" >
</activity>
<receiver android:name=".StartupReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="StartupReceiver_Manual_Start" />
</intent-filter>
</receiver>
<receiver android:name = ".CheckRunningApplicationReceiver"/>
</application>
使用 putParcelableArrayListExtra() 将列表放入 Intent 并使用 getParcelableArrayListExtra() 从 Intent 获取列表。
是的，您需要将其从 Activity 传递到第一个 BroadcastReceiver，然后它可以将其从传入 Intent 复制到传出 Intent用于触发第二个 BroadcastReceiver.
我所做的是用户选择特定的应用程序，所以我将这些选定的应用程序存储在 arraylist 中并使用共享首选项存储它。使用警报管理器每 1 秒调用一次启动广播接收器，然后调用 check运行apps 广播接收器。在这里，我检索了存储的数组列表并将其与当前的前台应用程序进行比较，然后做任何我想做的事情，比如应用程序锁和其他东西。但问题是它每秒检索 arraylist 并检查它。因此，应用程序有点滞后。我是 android 的新手。我认为我的方法是错误的。我也尝试使用服务，但在服务 onstart 命令中，代码只执行一次，所以它只检查当前 运行 应用程序与 arraylist 一次，即使服务无限期地在后台。请告诉我使用后台服务的正确方法。请把代码发给我。我搜索了很多但没有运气。我希望该服务仅获取一次数组列表并将其与当前前台 运行 应用程序永远进行比较。